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SHOUT NOTES. 249
jvisilhiiii in grassy places, Tri folium virdiuni, Torilis nadund (s])ar-
iiigly in the bordering fields), liitnicx cuiKjIoincnitus, Alliioii ur.^iiniia
(in a copse by a stream), Galliun Muilni/o and Ariun inacitlatnui.
Siuin h(t[fuHuui I found in a Avct place by the Panorama Walk, cut
oil" nearly to the root, and only to be recognised by foliage and
listular stem ; close by VnleriancUa Olitoria also grew. ]5elo\v
Croig Abermaw, in waste places, LnunwaiDnplexicKuJe, Avena fittna
and, in the railway-station ground, Pcuceddnuiii sativum. Crossing
by the ferry to the south of the estuary, I found C}jno;il()ssinii
oj/icinale abundantly growing on banks by the sea, in addition to
?tfilium rtf'usum, in a wood, and Stellioid umhru.sn, under a wall along
the Towyn Road towards Barmouth Junction. Lu-.ula pilum grows
plentifully in the Torrent Walk near Dolgelley, and Orchis mascula
lUmunculus sccleratus in ditches and wet
at the base of Cader Idris ;
places about Barmouth ;
and BIysmus rufus near Llanbedr, in
marshes opposite Mochras, complete the list.—H. W. Moningtox.
PoTAMOGETON FLuiTANs Rotli.— It may be well, as a side-light to
the note on the above plant (p. 204), to give one of Pioth's observations.
It occurs in the ' Beitrilge zur Botanik,' p. 12G, 17H3, reproduced
in the Tent. Fl. Germ. ii. p. 203 :— " Obs. 2. Foha caulina
inferiora in planta florente raro observanda sunt perfecta, quia
a vermibus destruuutur et putrescunt." The description in the
'Tentamen' is very short, while that in the 'Beitrilge' is very
full. It cannot, however, be quoted for the name, as it is " sine
nomine" ; but Roth himself quotes the 'Beitrilge ' for his jiuituns.
—Arthur Bennett.
In a letter I have recently received from Dr. Tiselius, he urges
against the hybrid origin of this species the very forcible argument
that it is never difficult to distinguish from its supposed pai'ents ;
whilst in other supposed hybrids of I'utamoijeton forms occur which
closely approach their parent species. I have always felt this to bo
a serious objection, and that, if it were as well-founded in actual fact
as it appears to be in our herbariums, it would be almost conclusive
against the hybridity of JluiUim. But may not this apparent
uniformity of type be due to the neglect of collectors, who are apt
to look for " typical specimens," and to pass by any form that is
not " well-marked"? I plead guilty to this neglect myself, and,
judging by what I see in the collections of others, it seems a very
common fault. The accidental discoveiy of a form of P.fluitans
which might easily have been passed as P. natum, induced me to
make a careful examination of a district which has not yielded
/hiitaua in previous years, with the result that I found several
untypical forms. If botanists will search for jluitans in waters
where natans and lurrns grow together, it is probable they will meet
with it. I would especially direct their attention to abnormal forms
of /'. nutans, and if any be found without the characteristic joiut
at the base of the leaf, or with incmhrunous nr suhmemhramius lunrrolutr
Idircr Irares, I
—Alfred Fryer.
should l)c very pleased to examine the specimens.